CUET Preparation Today
Calculate the resistivity of the material of a wire 1.0 m long, 0.4 mm in diameter and having a resistance of 2.0 Ohm. |
2.1 x 10-5 Ohm meter 2.1 x 10-5 Ohm 2.1 x 10-7 Ohm meter 2.1 x 10-7 Ohm |
2.1 x 10-7 Ohm meter |
Resistivity : ρ = R \(\frac{A}{l}\) |
